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3 years ago

The sum of two consecutive integers is 7. find the numbers

2 answers:

4 0

X + (x + 1) = 7

2x + 1 (-1) = 7 (-1)

2x = 6

2x/2 = 6/2

x = 3

x +1 = 3 + 1

x + 1 = 4

The two integers are 3, 4

hope this helps

kirill115 [55]3 years ago

4 0

X+x+1 = 7
2x + 1 = 7
2x = 6
x = 3

x + 1 = 3+ 1 = 4

the numbers are 3 and 4

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Answer:

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Step-by-step explanation:

probability that he or she will answer at least 4 problems correctly is given as;

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Since there are 10 problems. 4 is from the 7 problems chosen and 1 is from the 3 problems we can't figure out. Thus, P(exactly 4 correctly) = 7C4 x 3C1

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3 years ago

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Answer:

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3 years ago

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Answer:

The total number of games won by Unicorn is 40.

Step-by-step explanation:

We are given with a word problem
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Step 1: Finding the win percentage

Step 2: Finding the number of unicorns played during the season

Step 1 of 2

Let the number of games played by unicorn be x.The unicorn won 60% of the first x-10 games That is $\frac{60}{100} \times(x-10)$

Combining the 8 games we get,

$\begin{gathered}\frac{60}{100}(x-10)+8=\frac{60}{100} \times x-\frac{60}{100} \times 10+8 \\0.6 x-6+8=0.6 x+2\end{gathered}$

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2 years ago

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This question is incomplete, the complete question is;

Suppose John is a high school statistics teacher who believes that watching many hours of TV leads to lower test scores. Immediately after giving the most recent test, he surveyed each of the 24 students in his class and asked them how many hours of TV they watched that week. He then matched each student's test grade with his or her survey response. After compiling the data, he used hours of TV watched to predict each student's test score. He found the least-squares regression line to be y" = -1.5x + 85.

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